&CELL: TUBE


RADIUS

  The radius of a circular tube, or the distance between any of the
  edges and the origin in the case of non-circular tubes.

  No default is provided.

VOLTAGE

  The potential of the tube.

  By default 0 V.

EDGES

  The number of edges, according to the following table:

  ------------------------------------------------------------
  Shape       EDGES    Synonyms
  ------------------------------------------------------------
  Cylinder        0    CIRCLE, CIRCULAR, CYLINDER, CYLINDRICAL
  Triangle        3    TRIANGLE, TRIANGULAR
  Square          4    SQUARE
  Pentagon        5    PENTAGON, PENTAGONAL
  Hexagon         6    HEXAGON, HEXAGONAL
  Heptagon        7    HEPTAGON, HEPTAGONAL
  Octagon         8    OCTAGON, OCTAGONAL
  ------------------------------------------------------------

  Polygons with a larger number of edges can be made available
  on request.

Keyword index. Formatted on 10/11/98.